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36943aba91
When swapping pages out to disk it is necessary to save any tags that have been set, and restore when swapping back in. Make use of the new page flag (PG_ARCH_2, locally named PG_mte_tagged) to identify pages with tags. When swapping out these pages the tags are stored in memory and later restored when the pages are brought back in. Because shmem can swap pages back in without restoring the userspace PTE it is also necessary to add a hook for shmem. Signed-off-by: Steven Price <steven.price@arm.com> [catalin.marinas@arm.com: move function prototypes to mte.h] [catalin.marinas@arm.com: drop '_tags' from arch_swap_restore_tags()] Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Will Deacon <will@kernel.org> |
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clear_page.S | ||
clear_user.S | ||
copy_from_user.S | ||
copy_in_user.S | ||
copy_page.S | ||
copy_template.S | ||
copy_to_user.S | ||
crc32.S | ||
csum.c | ||
delay.c | ||
error-inject.c | ||
Makefile | ||
memchr.S | ||
memcmp.S | ||
memcpy.S | ||
memmove.S | ||
memset.S | ||
mte.S | ||
strchr.S | ||
strcmp.S | ||
strlen.S | ||
strncmp.S | ||
strnlen.S | ||
strrchr.S | ||
tishift.S | ||
uaccess_flushcache.c | ||
xor-neon.c |